<template>
  <div>
    <!-- 面包屑导航区域 -->
    <el-breadcrumb separator-class="el-icon-arrow-right">
      <!--  separator-class="el-icon-arrow-right"：设置面包屑中间的连接图标 -->
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>商品管理</el-breadcrumb-item>
      <el-breadcrumb-item>商品列表</el-breadcrumb-item>
    </el-breadcrumb>
    <!-- 卡片视图 -->
    <el-card>
      <el-row :gutter="20">
        <el-col :span="8">
          <el-input
            placeholder="请输入内容"
            v-model="queryInfo.query"
            clearable
            @clear="getGoodsList"
          >
            <el-button
              slot="append"
              icon="el-icon-search"
              @click="getGoodsList"
            ></el-button>
          </el-input>
        </el-col>
        <el-col :span="4">
          <el-button type="primary" @click="addGoods">添加商品</el-button>
        </el-col>
      </el-row>
      <!-- table表格区域 -->
      <el-table :data="goodsList" border stripe>
        <el-table-column type="index"></el-table-column>
        <el-table-column label="商品名称" prop="goods_name"></el-table-column>
        <el-table-column
          label="商品价格（元）"
          prop="goods_price"
          width="100px"
        ></el-table-column>
        <el-table-column
          label="商品重量"
          prop="goods_weight"
          width="90px"
        ></el-table-column>
        <el-table-column label="创建时间" width="150px">
          <template slot-scope="scope">
            <!-- 调用设置的全局时间过滤器 -->
            {{ scope.row.add_time | dateFormat }}
          </template>
        </el-table-column>
        <el-table-column label="操作" width="130px">
          <template slot-scope="scope">
            <el-button
              type="primary"
              size="mini"
              icon="el-icon-edit"
              @click="editById(scope.row)"
            ></el-button>
            <el-button
              type="danger"
              size="mini"
              icon="el-icon-delete"
              @click="removeById(scope.row.goods_id)"
            ></el-button>
          </template>
        </el-table-column>
      </el-table>
      <!-- 分页管理 -->
      <el-pagination
        @size-change="handleSizeChange"
        @current-change="handleCurrentChange"
        :current-page="queryInfo.pagenum"
        :page-sizes="[5, 10, 15, 20]"
        :page-size="queryInfo.pagesize"
        layout="total, sizes, prev, pager, next, jumper"
        :total="total"
        background
      >
      </el-pagination>
    </el-card>
  </div>
</template>

<script>
export default {
  data () {
    return {
      //  商品列表
      goodsList: [],
      //  获取商品列表请求的参数
      queryInfo: {
        pagenum: 1,
        pagesize: 10,
        query: ''
      },
      //  全部数据条数
      total: 0
    }
  },
  methods: {
    //  根据分页获取商品列表
    async getGoodsList () {
      const { data: res } = await this.$http.get('goods', {
        params: this.queryInfo
      })
      if (res.meta.status !== 200) {
        return this.$message.error('获取商品列表失败')
      }
      this.goodsList = res.goods
      this.total = res.total.total
    },
    //  监听pagesize的事件
    handleSizeChange (newpagesize) {
      this.queryInfo.pagesize = newpagesize
      this.getGoodsList()
    },
    //  监听pagenum的事件
    handleCurrentChange (newpagenum) {
      this.queryInfo.pagenum = newpagenum
      this.getGoodsList()
    },
    //  删除商品
    async removeById (id) {
      const confirmResult = await this.$confirm(
        '该操作将永久删除该商品，是否继续操作',
        '提示',
        {
          confirmButtonText: '确定',
          cancelButtonText: '取消',
          type: 'warning'
        }
      ).catch((error) => error)
      if (confirmResult !== 'confirm') return this.$message.info('已取消删除')
      const { data: res } = await this.$http.delete(`goods/${id}`)
      if (res.meta.status !== 200) return this.$message.error('删除商品失败')
      this.$message.success('删除商品成功')
      this.getGoodsList()
    },
    //  添加商品
    addGoods () {
      this.$router.push('/goods/add')
    },
    //  编辑商品信息
    editById (row) {
      this.$router.push('/goods/edit?goods_id=' + row.goods_id)
    }
  },
  created () {
    this.getGoodsList()
  }
}
</script>

<style lang="less" scoped></style>
